1
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Kushwah AS, Masood S, Mishra R, Banerjee M. Genetic and epigenetic alterations in DNA repair genes and treatment outcome of chemoradiotherapy in cervical cancer. Crit Rev Oncol Hematol 2024; 194:104240. [PMID: 38122918 DOI: 10.1016/j.critrevonc.2023.104240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/06/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
Cervical cancer (CaCx) is the deadliest malignancy among women which is caused by human papillomavirus (HPV) and anthro-demographical/clinicopathological factors. HPV oncoproteins E6 and E7 target p53 and RB (retinoblastoma) protein degradation, Ataxia telangiectasia mutated (ATM), ATM-RAD3-related (ATR) inactivation and subsequent impairment of non-homologous end joining (NHEJ), homologous recombination, and base excision repair pathways. There is also an accumulation of genetic and epigenetic alterations in Tumor Growth Suppressors (TGS), oncogenes, and DNA repair genes leading to increased genome instability and CaCx development. These alterations might be responsible for differential clinical response to Cisplatin-based chemoradiotherapy (CRT) in patients. This review explores HPV-mediated DNA damage as a risk factor in CaCx development, the mechanistic role of genetic and epigenetic alterations in DNA repair genes and their association with CRT and outcome, It also explores new possibilities for the development of genetic and epigenetic-based biomarkers for diagnostic, prognostic, and molecular therapeutic interventions.
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Affiliation(s)
- Atar Singh Kushwah
- Department of Urology and Oncological Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, New York 10029, NY, USA; Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow 226007, Uttar Pradesh, India; Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Shireen Masood
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow 226007, Uttar Pradesh, India
| | - Rajnikant Mishra
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Monisha Banerjee
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow 226007, Uttar Pradesh, India.
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Maas M, Todenhöfer T, Black PC. Urine biomarkers in bladder cancer - current status and future perspectives. Nat Rev Urol 2023; 20:597-614. [PMID: 37225864 DOI: 10.1038/s41585-023-00773-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2023] [Indexed: 05/26/2023]
Abstract
Urine markers to detect bladder cancer have been the subject of research for decades. The idea that urine - being in continuous contact with tumour tissue - should provide a vector of tumour information remains an attractive concept. Research on this topic has resulted in a complex landscape of many different urine markers with varying degrees of clinical validation. These markers range from cell-based assays to proteins, transcriptomic markers and genomic signatures, with a clear trend towards multiplex assays. Unfortunately, the number of different urine markers and the efforts in research and development of clinical grade assays are not reflected in the use of these markers in clinical practice, which is currently limited. Numerous prospective trials are in progress with the aim of increasing the quality of evidence about urinary biomarkers in bladder cancer to achieve guideline implementation. The current research landscape suggests a division of testing approaches. Some efforts are directed towards addressing the limitations of current assays to improve the performance of urine markers for a straightforward detection of bladder cancer. Additionally, comprehensive genetic analyses are emerging based on advances in next-generation sequencing and are expected to substantially affect the potential application of urine markers in bladder cancer.
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Affiliation(s)
- Moritz Maas
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
- Department of Urology, University of Tübingen, Tübingen, Germany
| | - Tilman Todenhöfer
- Clinical Trials Unit Studienpraxis Urologie, Nürtingen, Germany
- Eberhard-Karls-University, Tübingen, Germany
| | - Peter C Black
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada.
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3
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Wu T, Li N, Wu X, Du Y, Tang Z. LncRNA LINC00592 mediates the promoter methylation of WIF1 to promote the development of bladder cancer. Open Med (Wars) 2023; 18:20230788. [PMID: 37786775 PMCID: PMC10541805 DOI: 10.1515/med-2023-0788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/25/2023] [Accepted: 08/04/2023] [Indexed: 10/04/2023] Open
Abstract
Epigenetic alteration is a key feature that contributes to the progression of bladder cancer (BC) and long non-coding RNAs serve crucial role in the epigenetic modulation. This study was designed to explore the epigenetic regulation of LINC00592 in BC. LINC00592 expression in BC was examined. Then, LINC00592 was silenced in BC cell followed by cell behavior analyses using CCK-8, transwell, western blot, or flow cytometry. Potential downstream target of LINC00592 was explored using RNA pull-down assay and methylation of WIF1 was determined using methylated-specific PCR. In addition, WIF1 or/and LINC00592 were silenced in BC cells followed by cell behavior analyses to explore the regulation between them. Upregulation of LINC00592 was significantly detected in BC tissues and cells. In BC cells silencing LINC00592 suppressed the proliferation, migration, and epithelial-mesenchymal transitions (EMT), but enhanced apoptosis. Moreover, LINC00592 recruited DNMT1, DNMT3A, and DNMT3B to enhance WIF1 promoter methylation. In addition, WIF1 overexpression suppressed the proliferation, migration, as well as EMT, but enhanced apoptosis. Silencing WIF1 significantly attenuated the role of silencing LINC00592 in suppressing the proliferative, migratory, and EMT ability of BC cells, and increasing the apoptosis. LINC00592 promoted the growth and metastasis of BC via enhancing the promoter methylation of WIF1 and decreasing WIF1 transcription.
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Affiliation(s)
- Tieqiu Wu
- Department of Urology, The First Hospital of Changsha, Changsha, Hunan, PR China
| | - Nannan Li
- Department of Urology, The First Hospital of Changsha, Changsha, Hunan, PR China
| | - Xinghui Wu
- Department of Urology, The First Hospital of Changsha, Changsha, Hunan, PR China
| | - Yongchao Du
- Department of Urology, The First Hospital of Changsha, Changsha, Hunan, PR China
| | - Zhiwang Tang
- Department of Urology, The First Hospital of Changsha, No. 311 Yingpan Road, Kaifu District, Changsha, Hunan, PR China
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Lin X, Long S, Yan C, Zou X, Zhang G, Zou J, Wu G. Therapeutic potential of vasculogenic mimicry in urological tumors. Front Oncol 2023; 13:1202656. [PMID: 37810976 PMCID: PMC10551447 DOI: 10.3389/fonc.2023.1202656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Angiogenesis is an essential process in the growth and metastasis of cancer cells, which can be hampered by an anti-angiogenesis mechanism, thereby delaying the progression of tumors. However, the benefit of this treatment modality could be restricted, as most patients tend to develop acquired resistance during treatment. Vasculogenic mimicry (VM) is regarded as a critical alternative mechanism of tumor angiogenesis, where studies have demonstrated that patients with tumors supplemented with VM generally have a shorter survival period and a poorer prognosis. Inhibiting VM may be an effective therapeutic strategy to prevent cancer progression, which could prove helpful in impeding the limitations of lone use of anti-angiogenic therapy when performed concurrently with other anti-tumor therapies. This review summarizes the mechanism of VM signaling pathways in urological tumors, i.e., prostate cancer, clear cell renal cell carcinoma, and bladder cancer. Furthermore, it also summarizes the potential of VM as a therapeutic strategy for urological tumors.
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Affiliation(s)
- Xinyu Lin
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Sheng Long
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Congcong Yan
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Xiaofeng Zou
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Guoxi Zhang
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Junrong Zou
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Gengqing Wu
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated hospital of Gannan Medical University, Ganzhou, Jiangxi, China
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Chen S, Zhang L, Wang K, Huo J, Zhang S, Zhang X. The Potential Dual Role of H2.0-like Homeobox in the Tumorgenesis and Development of Colorectal Cancer and Its Prognostic Value. Can J Gastroenterol Hepatol 2023; 2023:5521544. [PMID: 37719132 PMCID: PMC10505080 DOI: 10.1155/2023/5521544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/16/2023] [Accepted: 08/29/2023] [Indexed: 09/19/2023] Open
Abstract
Background H2.0-like homeobox (HLX) is highly expressed in several hematopoietic malignancies. However, the role of HLX in the carcinogenesis and progression of colorectal cancer (CRC) patients has rarely been reported. Methods In this study, the data were collected from The Cancer Genome Atlas and Gene Expression Omnibus databases. The diagnostic value of HLX was analyzed by the R package "pROC." The overall survival was estimated using the "survival" and "survminer" packages. A nomogram was established to predict 1-, 3-, and 5-year overall survival of CRC patients. The CIBERSORT software was employed to calculate the relative proportions of 22 immune cells. Results HLX expression was downregulated in CRC patients. Remarkably, HLX expression was increased with stage (stage I-stage III) of CRC, and the CRC patients with high HLX expression exhibited a poor prognosis. The promoter methylation level of HLX was prominently increased in CRC samples compared to paracancerous samples. We also found that the six miRNAs target HLX genes, leading to its downregulation, and HLX expression had a negative correlation with its downstream target gene BRI3BP in both CRC and normal samples. Finally, we found that the 12 immune infiltrating cells were observably different between high and low HLX expression groups. The HLX had a significant positive correlation with 8 immune checkpoints (PD-1 (PDCD1), CTLA4, PDL-1 (CD274), PDL-2 (PDCD1LG2), CD80, CD86, LAG3, and TIGIT) expressions. Conclusion HLX probably played a carcinostasis role in the early stages of CRC but exhibited a cancer-promoting effect in the advanced stages. Meanwhile, HLX could serve as a reliable prognostic indicator for CRC.
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Affiliation(s)
- Shuo Chen
- Department of Colorectal Surgery, Tianjin Union Medical Center, Hongqiao District, Tianjin 300121, China
| | - Lin Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Hongqiao District, Tianjin 300121, China
| | - Kai Wang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Hongqiao District, Tianjin 300121, China
| | - Jizhen Huo
- Department of Cardiothoracic Surgery, Army Hospital of the 80th Group, Weicheng District, Weifang 261021, Shandong, China
| | - Siqi Zhang
- Nankai University, No. 94 Weijin Road, Nankai District, Tianjin 300074, China
| | - Xipeng Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Hongqiao District, Tianjin 300121, China
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Norollahi SE, Vahidi S, Shams S, Keymoradzdeh A, Soleymanpour A, Solymanmanesh N, Mirzajani E, Jamkhaneh VB, Samadani AA. Analytical and therapeutic profiles of DNA methylation alterations in cancer; an overview of changes in chromatin arrangement and alterations in histone surfaces. Horm Mol Biol Clin Investig 2023; 44:337-356. [PMID: 36799246 DOI: 10.1515/hmbci-2022-0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 01/24/2023] [Indexed: 02/18/2023]
Abstract
DNA methylation is the most important epigenetic element that activates the inhibition of gene transcription and is included in the pathogenesis of all types of malignancies. Remarkably, the effectors of DNA methylation are DNMTs (DNA methyltransferases) that catalyze de novo or keep methylation of hemimethylated DNA after the DNA replication process. DNA methylation structures in cancer are altered, with three procedures by which DNA methylation helps cancer development which are including direct mutagenesis, hypomethylation of the cancer genome, and also focal hypermethylation of the promoters of TSGs (tumor suppressor genes). Conspicuously, DNA methylation, nucleosome remodeling, RNA-mediated targeting, and histone modification balance modulate many biological activities that are essential and indispensable to the genesis of cancer and also can impact many epigenetic changes including DNA methylation and histone modifications as well as adjusting of non-coding miRNAs expression in prevention and treatment of many cancers. Epigenetics points to heritable modifications in gene expression that do not comprise alterations in the DNA sequence. The nucleosome is the basic unit of chromatin, consisting of 147 base pairs (bp) of DNA bound around a histone octamer comprised of one H3/H4 tetramer and two H2A/H2B dimers. DNA methylation is preferentially distributed over nucleosome regions and is less increased over flanking nucleosome-depleted DNA, implying a connection between nucleosome positioning and DNA methylation. In carcinogenesis, aberrations in the epigenome may also include in the progression of drug resistance. In this report, we report the rudimentary notes behind these epigenetic signaling pathways and emphasize the proofs recommending that their misregulation can conclude in cancer. These findings in conjunction with the promising preclinical and clinical consequences observed with epigenetic drugs against chromatin regulators, confirm the important role of epigenetics in cancer therapy.
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Affiliation(s)
- Seyedeh Elham Norollahi
- Cancer Research Center and Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran
| | - Sogand Vahidi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shima Shams
- Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Arman Keymoradzdeh
- Department of Neurosurgery, School of Medicine, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Armin Soleymanpour
- Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Nazanin Solymanmanesh
- Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ebrahim Mirzajani
- Department of Biochemistry and Biophysics, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Vida Baloui Jamkhaneh
- Department of Veterinary Medicine, Islamic Azad University of Babol Branch, Babol, Iran
| | - Ali Akbar Samadani
- Guilan Road Trauma Research Center, Guilan University of Medical Sciences, Rasht, Iran
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7
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Gilyazova I, Enikeeva K, Rafikova G, Kagirova E, Sharifyanova Y, Asadullina D, Pavlov V. Epigenetic and Immunological Features of Bladder Cancer. Int J Mol Sci 2023; 24:9854. [PMID: 37373000 DOI: 10.3390/ijms24129854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Bladder cancer (BLCA) is one of the most common types of malignant tumors of the urogenital system in adults. Globally, the incidence of BLCA is more than 500,000 new cases worldwide annually, and every year, the number of registered cases of BLCA increases noticeably. Currently, the diagnosis of BLCA is based on cystoscopy and cytological examination of urine and additional laboratory and instrumental studies. However, cystoscopy is an invasive study, and voided urine cytology has a low level of sensitivity, so there is a clear need to develop more reliable markers and test systems for detecting the disease with high sensitivity and specificity. Human body fluids (urine, serum, and plasma) are known to contain significant amounts of tumorigenic nucleic acids, circulating immune cells and proinflammatory mediators that can serve as noninvasive biomarkers, particularly useful for early cancer detection, follow-up of patients, and personalization of their treatment. The review describes the most significant advances in epigenetics of BLCA.
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Affiliation(s)
- Irina Gilyazova
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Kadriia Enikeeva
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Guzel Rafikova
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Evelina Kagirova
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Yuliya Sharifyanova
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Dilara Asadullina
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
| | - Valentin Pavlov
- Institute of Urology and Clinical Oncology, Bashkir State Medical University, 450008 Ufa, Russia
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Ma L, Li C, Yin H, Huang J, Yu S, Zhao J, Tang Y, Yu M, Lin J, Ding L, Cui Q. The Mechanism of DNA Methylation and miRNA in Breast Cancer. Int J Mol Sci 2023; 24:ijms24119360. [PMID: 37298314 DOI: 10.3390/ijms24119360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/17/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Breast cancer is the most prevalent cancer in the world. Currently, the main treatments for breast cancer are radiotherapy, chemotherapy, targeted therapy and surgery. The treatment measures for breast cancer depend on the molecular subtype. Thus, the exploration of the underlying molecular mechanisms and therapeutic targets for breast cancer remains a hotspot in research. In breast cancer, a high level of expression of DNMTs is highly correlated with poor prognosis, that is, the abnormal methylation of tumor suppressor genes usually promotes tumorigenesis and progression. MiRNAs, as non-coding RNAs, have been identified to play key roles in breast cancer. The aberrant methylation of miRNAs could lead to drug resistance during the aforementioned treatment. Therefore, the regulation of miRNA methylation might serve as a therapeutic target in breast cancer. In this paper, we reviewed studies on the regulatory mechanisms of miRNA and DNA methylation in breast cancer from the last decade, focusing on the promoter region of tumor suppressor miRNAs methylated by DNMTs and the highly expressed oncogenic miRNAs inhibited by DNMTs or activating TETs.
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Affiliation(s)
- Lingyuan Ma
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Chenyu Li
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Hanlin Yin
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Jiashu Huang
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Shenghao Yu
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Jin Zhao
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Yongxu Tang
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Min Yu
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Jie Lin
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Lei Ding
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
| | - Qinghua Cui
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China
- Yunnan Collaborative Innovation Center for Plateau Lake Ecology and Environmental Health, Kunming 650214, China
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Ma J, Wen X, Xu Z, Xia P, Jin Y, Lin J, Qian J. Abnormal regulation of miR-29b-ID1 signaling is involved in the process of decitabine resistance in leukemia cells. Cell Cycle 2023; 22:1215-1231. [PMID: 37032592 PMCID: PMC10193880 DOI: 10.1080/15384101.2023.2200312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/06/2023] [Accepted: 02/27/2023] [Indexed: 04/11/2023] Open
Abstract
Decitabine (DAC) is an inhibitor of DNA methyltransferase used to treat leukemia, but primary or secondary resistance to DAC may develop during therapy. The mechanisms related to DAC resistance remain poorly understood. In this study, we find that miR-29b expression was decreased in various leukemia cell lines and AML patients and was associated with poor prognosis. In DAC-sensitive cells, miR-29b inhibited cell growth, promoted apoptosis, and increased the sensitivity to DAC. Similarly, it exerted anti-leukemic effects in DAC-resistant cells. When the miR-29b promoter in DAC-resistant cells was demethylated, its expression was not up-regulated. Furthermore, the expression of ID1, one of the target genes of miR-29b, was down-regulated in miR-29b transfected leukemic cells. ID1 promoted cell growth, inhibited cell apoptosis, and decreased DAC sensitivity in leukemic cells in vitro and in vivo. ID1 was down-regulated in DAC-sensitive cells treated with DAC, while it was up-regulated in DAC-resistant cells. Interestingly, the ID1 promoter region was completely unmethylated in both DAC-resistant cells and sensitive cells before DAC treatment. The growth inhibition, increased DAC sensitivity, and apoptosis induced by miR-29b can be eliminated by increasing ID1 expression. These results suggested that DAC regulates ID1 expression by acting on miR-29b. Abnormal ID1 expression of ID1 that is methylation independent and induced by miR-29b may be involved in the process of leukemia cells acquiring DAC resistance.
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Affiliation(s)
- Jichun Ma
- Department of central lab, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiangmei Wen
- Department of central lab, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zijun Xu
- Department of central lab, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Peihui Xia
- Department of central lab, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ye Jin
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Department of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jiang Lin
- Department of central lab, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jun Qian
- Zhenjiang Clinical Research Center of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- The Key Lab of Precision Diagnosis and Treatment in Hematologic Malignancies of Zhenjiang City, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
- Department of Hematology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
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10
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Methylation-sensitive transcription-enhanced single-molecule biosensing of DNA methylation in cancer cells and tissues. Anal Chim Acta 2023; 1251:340996. [PMID: 36925287 DOI: 10.1016/j.aca.2023.340996] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 02/21/2023] [Indexed: 02/24/2023]
Abstract
As a major epigenetic modification, DNA methylation participates in diverse cellular functions and emerges as a promising biomarker for disease diagnosis and monitoring. Herein, we developed a methylation-sensitive transcription-enhanced single-molecule biosensor to detect DNA methylation in human cells and tissues. In this biosensor, a rationally designed transcription machine is split into two parts including a promoter sequence (probe-P) for initiating transcription and a template sequence (probe-T) for RNA synthesis. The presence of specific DNA methylation leads to the formation of full-length transcription machine through sequence-specific ligation of probe-P and probe-T, initiating the synthesis of abundant ssRNA transcripts. The resultant ssRNAs can activate CRISPR/Cas12a to catalyze cyclic cleavage of fluorophore- and quencher-dual labeled signal probes, resulting in the recovery of the fluorophore signal that can be quantified by single-molecule detection. Taking advantages of the high-fidelity ligation of split transcription machine and the high efficiency of transcription- and CRISPR/Cas12a cleavage-mediated dual signal amplification, this single-molecule biosensor achieves a low detection limit of 337 aM and high selectivity. Moreover, it can distinguish 0.01% methylation level, and even accurately detect genomic DNA methylation in single cell and clinical samples, providing a powerful tool for epigenetic researches and clinical diagnostics.
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11
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Alpoim-Moreira J, Szóstek-Mioduchowska A, Słyszewska M, Rebordão MR, Skarzynski DJ, Ferreira-Dias G. 5-Aza-2′-Deoxycytidine (5-Aza-dC, Decitabine) Inhibits Collagen Type I and III Expression in TGF-β1-Treated Equine Endometrial Fibroblasts. Animals (Basel) 2023; 13:ani13071212. [PMID: 37048467 PMCID: PMC10093662 DOI: 10.3390/ani13071212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/03/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Endometrosis negatively affects endometrial function and fertility in mares, due to excessive deposition of type I (COL1) and type III (COL3) collagens. The pro-fibrotic transforming growth factor (TGF-β1) induces myofibroblast differentiation, characterized by α-smooth muscle actin (α-SMA) expression, and collagen synthesis. In humans, fibrosis has been linked to epigenetic mechanisms. To the best of our knowledge, this has not been described in mare endometrium. Therefore, this study aimed to investigate the in vitro epigenetic regulation in TGF-β1-treated mare endometrial fibroblasts and the use of 5-aza-2′-deoxycytidine (5-aza-dC), an epigenetic modifier, as a putative treatment option for endometrial fibrosis. Methods and Results: The in vitro effects of TGF-β1 and of 5-aza-dC on DNA methyltransferases (DNMT1, DNMT3A, and DNMT3B), COL1A1, COL3A1, and α-SMA transcripts were analyzed in endometrial fibroblasts, and COL1 and COL3 secretion in a co-culture medium. TGF-β1 upregulated DNMT3A transcripts and collagen secretion. In TGF-β1-treated endometrial fibroblasts, DNA methylation inhibitor 5-aza-dC decreased collagen transcripts and secretion, but not α-SMA transcripts. Conclusion: These findings suggest a possible role of epigenetic mechanisms during equine endometrial fibrogenesis. The in vitro effect of 5-aza-dC on collagen reduction in TGF-β1-treated fibroblasts highlights this epigenetic involvement. This may pave the way to different therapeutic approaches for endometrosis.
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12
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Blood-based DNA methylation signatures in cancer: A systematic review. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166583. [PMID: 36270476 DOI: 10.1016/j.bbadis.2022.166583] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/30/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
Abstract
DNA methylation profiles are in dynamic equilibrium via the initiation of methylation, maintenance of methylation and demethylation, which control gene expression and chromosome stability. Changes in DNA methylation patterns play important roles in carcinogenesis and primarily manifests as hypomethylation of the entire genome and the hypermethylation of individual loci. These changes may be reflected in blood-based DNA, which provides a non-invasive means for cancer monitoring. Previous blood-based DNA detection objects primarily included circulating tumor DNA/cell-free DNA (ctDNA/cfDNA), circulating tumor cells (CTCs) and exosomes. Researchers gradually found that methylation changes in peripheral blood mononuclear cells (PBMCs) also reflected the presence of tumors. Blood-based DNA methylation is widely used in early diagnosis, prognosis prediction, dynamic monitoring after treatment and other fields of clinical research on cancer. The reversible methylation of genes also makes them important therapeutic targets. The present paper summarizes the changes in DNA methylation in cancer based on existing research and focuses on the characteristics of the detection objects of blood-based DNA, including ctDNA/cfDNA, CTCs, exosomes and PBMCs, and their application in clinical research.
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13
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Yang J, Xu J, Gao Q, Wu F, Han W, Yu C, Shi Y, Qiu Y, Chen Y, Zhou X. Identification of adenylate cyclase 2 methylation in bladder cancer with implications for prognosis and immunosuppressive microenvironment. Front Oncol 2022; 12:1025195. [PMID: 36313639 PMCID: PMC9614257 DOI: 10.3389/fonc.2022.1025195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/20/2022] [Indexed: 11/19/2022] Open
Abstract
Background The incidence and mortality of bladder cancer (BCa) are increasing, while the existing diagnostic methods have limitations. Therefore, for early detection and response prediction, it is crucial to improve the prognosis and treatment strategies. However, with existing diagnostic methods, detecting BCa in the early stage is challenging. Hence, novel biomarkers are urgently needed to improve early diagnosis and treatment efficiency. Methods The gene expression profile and gene methylation profile dataset were downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs), differentially methylated genes (DMGs), and methylation-regulated differentially expressed genes (MeDEGs) were gradually identified. A cancer genome map was obtained using online gene expression profile interaction analysis, and survival implications were produced using Kaplan-Meier survival analysis. GSEA was employed to predict the marker pathways where DEGs were significantly involved. The study used bisulfite PCR amplification combined with bisulfite amplicon sequencing (BSAS) to screen for methylation analysis of multiple candidate regions of the adenylate cyclase 2 (ADCY2) based on the sequence design of specific gene regions and CpG islands. Results In this study, DEGs and DMGs with significantly up- or down-regulated expression were selected. The intersection method was used to screen the MeDEGs. The interaction network group in STRING was then visualized using Cytoscape, and the PPI network was constructed to identify the key genes. The key genes were then analyzed using functional enrichment. To compare the relationship between key genes and the prognosis of BCa patients, we further investigated ADCY2 and found that ADCY2 can be a potential clinical biomarker in BCa prognosis and immunotherapy response prediction. In human BCa 5637 and MGH1 cells, we developed and verified the effectiveness of ADCY2 primers using BSAS technology. The findings revealed that the expression of ADCY2 is highly regulated by the methylation of the promoter regions. Conclusion This study revealed that increased expression of ADCY2 was significantly correlated with increased tumor heterogeneity, predicting worse survival and immunotherapy response in BCa patients.
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Affiliation(s)
- Jianfeng Yang
- Department of Surgery, Shangnan Branch of Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jin Xu
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Qian Gao
- Wound Treatment Center Affiliated Xinhua Hospital of Medicine College of Shanghai Jiaotong University, Shanghai, China
| | - Fan Wu
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Han
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Chao Yu
- Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Youyang Shi
- Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yunhua Qiu
- Department of Surgery, Shangnan Branch of Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Xiqiu Zhou, ; Yuanbiao Chen, ; Yunhua Qiu,
| | - Yuanbiao Chen
- Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
- *Correspondence: Xiqiu Zhou, ; Yuanbiao Chen, ; Yunhua Qiu,
| | - Xiqiu Zhou
- Department of Surgery, Shangnan Branch of Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Xiqiu Zhou, ; Yuanbiao Chen, ; Yunhua Qiu,
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14
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Novel epigenetic therapeutic strategies and targets in cancer. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166552. [PMID: 36126898 DOI: 10.1016/j.bbadis.2022.166552] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/08/2022] [Accepted: 09/14/2022] [Indexed: 11/24/2022]
Abstract
The critical role of dysregulated epigenetic pathways in cancer genesis, development, and therapy has typically been established as a result of scientific and technical innovations in next generation sequencing. RNA interference, histone modification, DNA methylation and chromatin remodelling are epigenetic processes that control gene expression without causing mutations in the DNA. Although epigenetic abnormalities are thought to be a symptom of cell tumorigenesis and malignant events that impact tumor growth and drug resistance, physicians believe that related processes might be a key therapeutic target for cancer treatment and prevention due to the reversible nature of these processes. A plethora of novel strategies for addressing epigenetics in cancer therapy for immuno-oncological complications are currently available - ranging from basic treatment to epigenetic editing. - and they will be the subject of this comprehensive review. In this review, we cover most of the advancements made in the field of targeting epigenetics with special emphasis on microbiology, plasma science, biophysics, pharmacology, molecular biology, phytochemistry, and nanoscience.
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15
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Khataee A, Sohrabi H, Ehsani M, Agaei M, Sisi AJ, Abdi J, Yoon Y. State-of-the-art progress of metal-organic framework-based electrochemical and optical sensing platforms for determination of bisphenol A as an endocrine disruptor. ENVIRONMENTAL RESEARCH 2022; 212:113536. [PMID: 35661731 DOI: 10.1016/j.envres.2022.113536] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/07/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Considering the low concentration levels of bisphenol compounds present in environmental, food, and biological samples, and the difficulty in analyzing the matrices, the main challenge is with the cleanup and extraction process, as well as developing highly sensitive determination methods. Recent advances in the field of metal-organic frameworks (MOFs) due to their large surface area, low weight, and other extraordinary physical, chemical, and mechanical features have made these porous materials a crucial agent in developing biosensing assays. This review focuses on MOFs across their definition, structural features, various types, synthetic routes, and their significant utilization in sensing assays for bisphenol A (BPA) determination. Additionally, recent improvements in characteristics and physio-chemical features of MOFs and their functional applications in developing electrochemical and optical sensing assays via different recognition elements for detecting BPA are comprehensively discussed. Finally, the existing boundaries of the current advances including future challenges concerning successful construction of sensing approaches by employing functionalized MOFs are addressed.
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Affiliation(s)
- Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey
| | - Hessamaddin Sohrabi
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Maryam Ehsani
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Mahdiyeh Agaei
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Abdollah Jamal Sisi
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Jafar Abdi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, 3619995161, Shahrood, Iran
| | - Yeojoon Yoon
- Department of Environmental and Energy Engineering, Yonsei University, Wonju, Republic of Korea
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16
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Xu J, Yang R, Li J, Wang L, Cohen M, Simeone DM, Costa M, Wu XR. DNMT3A/ miR-129-2-5p/Rac1 Is an Effector Pathway for SNHG1 to Drive Stem-Cell-like and Invasive Behaviors of Advanced Bladder Cancer Cells. Cancers (Basel) 2022; 14:4159. [PMID: 36077697 PMCID: PMC9454896 DOI: 10.3390/cancers14174159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/20/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
The stem-cell-like behavior of cancer cells plays a central role in tumor heterogeneity and invasion and correlates closely with drug resistance and unfavorable clinical outcomes. However, the molecular underpinnings of cancer cell stemness remain incompletely defined. Here, we show that SNHG1, a long non-coding RNA that is over-expressed in ~95% of human muscle-invasive bladder cancers (MIBCs), induces stem-cell-like sphere formation and the invasion of cultured bladder cancer cells by upregulating Rho GTPase, Rac1. We further show that SNHG1 binds to DNA methylation transferase 3A protein (DNMT3A), and tethers DNMT3A to the promoter of miR-129-2, thus hyper-methylating and repressing miR-129-2-5p transcription. The reduced binding of miR-129-2 to the 3'-UTR of Rac1 mRNA leads to the stabilization of Rac1 mRNA and increased levels of Rac1 protein, which then stimulates MIBC cell sphere formation and invasion. Analysis of the Human Protein Atlas shows that a high expression of Rac1 is strongly associated with poor survival in patients with MIBC. Our data strongly suggest that the SNHG1/DNMT3A/miR-129-2-5p/Rac1 effector pathway drives stem-cell-like and invasive behaviors in MIBC, a deadly form of bladder cancer. Targeting this pathway, alone or in combination with platinum-based therapy, may reduce chemoresistance and improve longer-term outcomes in MIBC patients.
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Affiliation(s)
- Jiheng Xu
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Rui Yang
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Jingxia Li
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Lidong Wang
- Department of Surgery, New York University School of Medicine, New York, NY 10016, USA
| | - Mitchell Cohen
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Diane M. Simeone
- Department of Surgery, New York University School of Medicine, New York, NY 10016, USA
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Max Costa
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Xue-Ru Wu
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
- Department of Urology, New York University School of Medicine, New York, NY 10016, USA
- Veterans Affairs New York Harbor Healthcare System, Manhattan Campus, New York, NY 10010, USA
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17
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Crabtree JS. Epigenetic Regulation in Gastroenteropancreatic Neuroendocrine Tumors. Front Oncol 2022; 12:901435. [PMID: 35747820 PMCID: PMC9209739 DOI: 10.3389/fonc.2022.901435] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 12/11/2022] Open
Abstract
Gastroenteropancreatic neuroendocrine neoplasms are a rare, diverse group of neuroendocrine tumors that form in the pancreatic and gastrointestinal tract, and often present with side effects due to hormone hypersecretion. The pathogenesis of these tumors is known to be linked to several genetic disorders, but sporadic tumors occur due to dysregulation of additional genes that regulate proliferation and metastasis, but also the epigenome. Epigenetic regulation in these tumors includes DNA methylation, chromatin remodeling and regulation by noncoding RNAs. Several large studies demonstrate the identification of epigenetic signatures that may serve as biomarkers, and others identify innovative, epigenetics-based targets that utilize both pharmacological and theranostic approaches towards the development of new treatment approaches.
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18
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He C, Wang D, Wang R, Huang Y, Huang X, Shen S, Lv J, Wu M. Epigallocatechin Gallate Induces the Demethylation of Actinin Alpha 4 to Inhibit Diabetic Nephropathy Renal Fibrosis via the NF-KB Signaling Pathway In Vitro. Dose Response 2022; 20:15593258221105704. [PMID: 35706474 PMCID: PMC9189538 DOI: 10.1177/15593258221105704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 05/10/2022] [Accepted: 05/17/2022] [Indexed: 11/15/2022]
Abstract
Actinin alpha 4 (ACTN4) is expressed in the kidney podocytes. ACTN4 gene methylation in patients with diabetic nephropathy (DN) remains high. Underlying mechanism of epigallocatechin-3-gallate (EGCG) inducing ACTN4 demethylation, and its inhibitory effect on DN renal fibrosis remains unclear.
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Affiliation(s)
- Chunling He
- Department of Endocrinology and Genetic Metabolism, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Dong Wang
- Department of Hepatobiliary Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Ruoling Wang
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Yongli Huang
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Xin Huang
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - ShuMin Shen
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Jun Lv
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
| | - Mingcai Wu
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, China
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19
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Harms PW, Verhaegen ME, Vo JN, Tien JC, Pratt D, Su F, Dhanasekaran SM, Cao X, Mangelberger D, VanGoor J, Choi JE, Ma VT, Dlugosz AA, Chinnaiyan AM. Viral Status Predicts the Patterns of Genome Methylation and Decitabine Response in Merkel Cell Carcinoma. J Invest Dermatol 2022; 142:641-652. [PMID: 34474081 PMCID: PMC8860850 DOI: 10.1016/j.jid.2021.07.173] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 06/22/2021] [Accepted: 07/12/2021] [Indexed: 12/13/2022]
Abstract
Merkel cell carcinoma (MCC) is an aggressive cutaneous neuroendocrine carcinoma that is classified as Merkel cell polyomavirus-positive (virus positive [VP]) or Merkel cell polyomavirus-negative (virus negative [VN]). Epigenetic changes, such as DNA methylation, can alter gene expression and influence cancer progression. However, patterns of DNA methylation and the therapeutic efficacy of hypomethylating agents have not been fully explored in MCC. We characterized genome-wide DNA methylation in 16 MCC cell lines from both molecular subclasses in comparison with other cancer types and found that the overall profile of MCC is similar to that of small-cell lung carcinoma. Comparison of VP MCC with VN MCC revealed 2,260 differentially methylated positions. The hypomethylating agent decitabine upregulated the expression of antigen-presenting machinery in MCC cell lines and stimulated membrane expression of HLA-A in VP and VN MCC xenograft tumors. Decitabine also induced prominent caspase- and large T antigen‒independent cell death in VP MCC, whereas VN MCC cell lines displayed decreased proliferation without increased cell death. In mouse xenografts, decitabine significantly decreased the size of VP tumors but not that of VN tumors. Our findings indicate that viral status predicts genomic methylation patterns in MCC and that decitabine may be therapeutically effective against MCC through antiproliferative effects, cell death, and increased immune recognition.
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Affiliation(s)
- Paul W. Harms
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Dermatology, University of Michigan, Ann Arbor, MI, 48109, USA
| | | | - Josh N. Vo
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jean C. Tien
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Drew Pratt
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Fengyun Su
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Saravana M. Dhanasekaran
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xuhong Cao
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Doris Mangelberger
- Department of Dermatology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Julia VanGoor
- College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jae Eun Choi
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Vincent T. Ma
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Andrzej A. Dlugosz
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Dermatology, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Arul M. Chinnaiyan
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109, USA,Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Urology, University of Michigan, Ann Arbor, MI, 48109, USA,Corresponding Author: Arul M. Chinnaiyan, M.D., Ph.D., Investigator, Howard Hughes Medical Institute, American Cancer Society Professor, S. P. Hicks Endowed Professor of Pathology, Rogel Cancer Center, University of Michigan Medical School, 1400 E. Medical Center Dr. 5316 CCGC, Ann Arbor, MI 48109-0602,
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20
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Rasteiro AM, Sá e Lemos E, Oliveira PA, Gil da Costa RM. Molecular Markers in Urinary Bladder Cancer: Applications for Diagnosis, Prognosis and Therapy. Vet Sci 2022; 9:vetsci9030107. [PMID: 35324835 PMCID: PMC8950778 DOI: 10.3390/vetsci9030107] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/15/2022] [Accepted: 02/22/2022] [Indexed: 12/18/2022] Open
Abstract
Cancer of the urinary bladder is a neoplasm with considerable importance in veterinary medicine, given its high incidence in several domestic animal species and its life-threatening character. Bladder cancer in companion animals shows a complex and still poorly understood biopathology, and this lack of knowledge has limited therapeutic progress over the years. Even so, important advances concerning the identification of tumour markers with clinical applications at the diagnosis, prognosis and therapeutic levels have recently been made, for example, the identification of pathological BRAF mutations. Those advances are now facilitating the introduction of targeted therapies. The present review will address such advances, focusing on small animal oncology and providing the reader with an update on this field. When appropriate, comparisons will be drawn with bladder cancer in human patients, as well as with experimental models of the disease.
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Affiliation(s)
- Ana Mafalda Rasteiro
- CEDIVET, Laboratório Clínico Veterinário, 4200-071 Porto, Portugal; (A.M.R.); (E.S.e.L.)
- Garden Veterinary Group, Chippenham SN15 1NQ, UK
| | - Eva Sá e Lemos
- CEDIVET, Laboratório Clínico Veterinário, 4200-071 Porto, Portugal; (A.M.R.); (E.S.e.L.)
| | - Paula A. Oliveira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal;
| | - Rui M. Gil da Costa
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal;
- Molecular Oncology and Viral Pathology Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto. CCC), 4200-072 Porto, Portugal
- Postgraduate Programme in Adult Health (PPGSAD), Department of Morphology, University Hospital (HUUFMA), Federal University of Maranhão (UFMA), São Luís 65080-805, Brazil
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- Correspondence:
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21
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Bošković M, Roje B, Chung FFL, Gelemanović A, Cahais V, Cuenin C, Khoueiry R, Vilović K, Herceg Z, Terzić J. DNA Methylome Changes of Muscle- and Neuronal-Related Processes Precede Bladder Cancer Invasiveness. Cancers (Basel) 2022; 14:487. [PMID: 35158756 PMCID: PMC8833512 DOI: 10.3390/cancers14030487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 12/24/2022] Open
Abstract
Bladder cancer (BC) is the ninth leading cause of cancer death with one of the highest recurrence rates among all cancers. One of the main risks for BC development is exposure to nitrosamines present in tobacco smoke or in other products. Aberrant epigenetic (DNA methylation) changes accompanied by deregulated gene expression are an important element of cancer pathogenesis. Therefore, we aimed to determine DNA methylation signatures and their impacts on gene expression in mice treated with N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN), a carcinogen similar to compounds found in tobacco smoke. Following BBN administration mice developed non-invasive or invasive bladder cancers. Surprisingly, muscle- and neuronal-related pathways emerged as the most affected in those tumors. Hypo- and hypermethylation changes were present within non-invasive BC, across CpGs mapping to the genes involved in muscle- and neuronal-related pathways, however, methylation differences were not sufficient to affect the expression of the majority of associated genes. Conversely, invasive tumors displayed hypermethylation changes that were linked with alterations in gene expression profiles. Together, these findings indicate that bladder cancer progression could be revealed through methylation profiling at the pre-invasive cancer stage that could assist monitoring of cancer patients and guide novel therapeutic approaches.
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Affiliation(s)
- Maria Bošković
- Laboratory for Cancer Research, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (M.B.); (B.R.); (K.V.)
| | - Blanka Roje
- Laboratory for Cancer Research, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (M.B.); (B.R.); (K.V.)
| | - Felicia Fei-Lei Chung
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69008 Lyon, France; (F.F.-L.C.); (V.C.); (C.C.); (R.K.)
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, Jalan Universiti, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
| | - Andrea Gelemanović
- Biology of Robustness Group, Mediterranean Institute for Life Sciences (MedILS), Šetalište Ivana Meštrovića 45, 21000 Split, Croatia;
| | - Vincent Cahais
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69008 Lyon, France; (F.F.-L.C.); (V.C.); (C.C.); (R.K.)
| | - Cyrille Cuenin
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69008 Lyon, France; (F.F.-L.C.); (V.C.); (C.C.); (R.K.)
| | - Rita Khoueiry
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69008 Lyon, France; (F.F.-L.C.); (V.C.); (C.C.); (R.K.)
| | - Katarina Vilović
- Laboratory for Cancer Research, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (M.B.); (B.R.); (K.V.)
| | - Zdenko Herceg
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69008 Lyon, France; (F.F.-L.C.); (V.C.); (C.C.); (R.K.)
| | - Janoš Terzić
- Laboratory for Cancer Research, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (M.B.); (B.R.); (K.V.)
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22
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Kowluru RA, Mohammad G. Epigenetic modifications in diabetes. Metabolism 2022; 126:154920. [PMID: 34715117 DOI: 10.1016/j.metabol.2021.154920] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 12/25/2022]
Abstract
Diabetes is now considered as a 'silent epidemic' that claims over four million lives every year, and the disease knows no socioeconomic boundaries. Despite extensive efforts by the National and International organizations, and cutting-edge research, about 11% world's population is expected to suffer from diabetes (and its complications) by year 2045. This life-long disease damages both the microvasculature and the macrovasculature of the body, and affects many metabolic and molecular pathways, altering the expression of many genes. Recent research has shown that external factors, such as environmental factors, lifestyle and pollutants can also regulate gene expression, and contribute in the disease development and progression. Many epigenetic modifications are implicated in the development of micro- and macro- vascular complications including DNA methylation and histone modifications of several genes implicated in their development. Furthermore, several noncoding RNAs, such as micro RNAs and long noncoding RNAs, are also altered, affecting many biochemical pathways. Epigenetic modifications, however, have the advantage that they could be passed to the next generation, or can be erased. They are now being explored as therapeutical target(s) in the cancer field, which opens up the possibility to use them for treating diabetes and preventing/slowing down its complications.
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Affiliation(s)
- Renu A Kowluru
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University, USA.
| | - Ghulam Mohammad
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University, USA
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23
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Alterations of Chromatin Regulators in the Pathogenesis of Urinary Bladder Urothelial Carcinoma. Cancers (Basel) 2021; 13:cancers13236040. [PMID: 34885146 PMCID: PMC8656749 DOI: 10.3390/cancers13236040] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Urinary bladder cancer is one of the ten major cancers worldwide, with higher incidences in males, in smokers, and in highly industrialized countries. New therapies beyond cytotoxic chemotherapy are urgently needed to improve treatment of these tumors. A better understanding of the mechanisms underlying their development may help in this regard. Recently, it was discovered that a group of proteins regulating the state of chromatin and thus gene expression is exceptionally and frequently affected by gene mutations in bladder cancers. Altered function of these mutated chromatin regulators must therefore be fundamental in their development, but how and why is poorly understood. Here we review the current knowledge on changes in chromatin regulators and discuss their possible consequences for bladder cancer development and options for new therapies. Abstract Urothelial carcinoma (UC) is the most frequent histological type of cancer in the urinary bladder. Genomic changes in UC activate MAPK and PI3K/AKT signal transduction pathways, which increase cell proliferation and survival, interfere with cell cycle and checkpoint control, and prevent senescence. A more recently discovered additional category of genetic changes in UC affects chromatin regulators, including histone-modifying enzymes (KMT2C, KMT2D, KDM6A, EZH2), transcription cofactors (CREBBP, EP300), and components of the chromatin remodeling complex SWI/SNF (ARID1A, SMARCA4). It is not yet well understood how these changes contribute to the development and progression of UC. Therefore, we review here the emerging knowledge on genomic and gene expression alterations of chromatin regulators and their consequences for cell differentiation, cellular plasticity, and clonal expansion during UC pathogenesis. Our analysis identifies additional relevant chromatin regulators and suggests a model for urothelial carcinogenesis as a basis for further mechanistic studies and targeted therapy development.
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24
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Hu J, Othmane B, Yu A, Li H, Cai Z, Chen X, Ren W, Chen J, Zu X. 5mC regulator-mediated molecular subtypes depict the hallmarks of the tumor microenvironment and guide precision medicine in bladder cancer. BMC Med 2021; 19:289. [PMID: 34836536 PMCID: PMC8627095 DOI: 10.1186/s12916-021-02163-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/18/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Depicting the heterogeneity and functional characteristics of the tumor microenvironment (TME) is necessary to achieve precision medicine for bladder cancer (BLCA). Although classical molecular subtypes effectively reflect TME heterogeneity and characteristics, their clinical application is limited by several issues. METHODS In this study, we integrated the Xiangya cohort and multiple external BLCA cohorts to develop a novel 5-methylcytosine (5mC) regulator-mediated molecular subtype system and a corresponding quantitative indicator, the 5mC score. Unsupervised clustering was performed to identify novel 5mC regulator-mediated molecular subtypes. The principal component analysis was applied to calculate the 5mC score. Then, we correlated the 5mC clusters (5mC score) with classical molecular subtypes, immunophenotypes, clinical outcomes, and therapeutic opportunities in BLCA. Finally, we performed pancancer analyses on the 5mC score. RESULTS Two 5mC clusters, including 5mC cluster 1 and cluster 2, were identified. These novel 5mC clusters (5mC score) could accurately predict classical molecular subtypes, immunophenotypes, prognosis, and therapeutic opportunities of BLCA. 5mC cluster 1 (high 5mC score) indicated a luminal subtype and noninflamed phenotype, characterized by lower anticancer immunity but better prognosis. Moreover, 5mC cluster 1 (high 5mC score) predicted low sensitivity to cancer immunotherapy, neoadjuvant chemotherapy, and radiotherapy, but high sensitivity to antiangiogenic therapy and targeted therapies, such as blocking the β-catenin, FGFR3, and PPAR-γ pathways. CONCLUSIONS The novel 5mC regulator-based subtype system reflects many aspects of BLCA biology and provides new insights into precision medicine in BLCA. Furthermore, the 5mC score may be a generalizable predictor of immunotherapy response and prognosis in pancancers.
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Affiliation(s)
- Jiao Hu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Belaydi Othmane
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Anze Yu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China.,Immunobiology & Transplant Science Center, Houston Methodist Research Institute, Texas Medical Center, Houston, TX, 77030, USA
| | - Huihuang Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Zhiyong Cai
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Xu Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China.,Institute for Infection Prevention and Hospital Epidemiology, Medical Center, University of Freiburg, Freiburg, Germany
| | - Wenbiao Ren
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China.,George Whipple Lab for Cancer Research, Departments of Pathology and Urology, and The Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, 14646, USA
| | - Jinbo Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China.
| | - Xiongbing Zu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, 410008, China.
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25
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Xiao W, Zhou Q, Wen X, Wang R, Liu R, Wang T, Shi J, Hu Y, Hou J. Small-Molecule Inhibitors Overcome Epigenetic Reprogramming for Cancer Therapy. Front Pharmacol 2021; 12:702360. [PMID: 34603017 PMCID: PMC8484527 DOI: 10.3389/fphar.2021.702360] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/02/2021] [Indexed: 12/12/2022] Open
Abstract
Cancer treatment is a significant challenge for the global health system, although various pharmacological and therapeutic discoveries have been made. It has been widely established that cancer is associated with epigenetic modification, which is reversible and becomes an attractive target for drug development. Adding chemical groups to the DNA backbone and modifying histone proteins impart distinct characteristics on chromatin architecture. This process is mediated by various enzymes modifying chromatin structures to achieve the diversity of epigenetic space and the intricacy in gene expression files. After decades of effort, epigenetic modification has represented the hallmarks of different cancer types, and the enzymes involved in this process have provided novel targets for antitumor therapy development. Epigenetic drugs show significant effects on both preclinical and clinical studies in which the target development and research offer a promising direction for cancer therapy. Here, we summarize the different types of epigenetic enzymes which target corresponding protein domains, emphasize DNA methylation, histone modifications, and microRNA-mediated cooperation with epigenetic modification, and highlight recent achievements in developing targets for epigenetic inhibitor therapy. This article reviews current anticancer small-molecule inhibitors targeting epigenetic modified enzymes and displays their performances in different stages of clinical trials. Future studies are further needed to address their off-target effects and cytotoxicity to improve their clinical translation.
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Affiliation(s)
- Wenjing Xiao
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China.,Department of Pharmacy, The General Hospital of Western Theater Command of PLA, Chengdu, China
| | - Qiaodan Zhou
- Department of Ultrasonic, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xudong Wen
- Department of Gastroenterology and Hepatology, Chengdu First People's Hospital, Chengdu, China
| | - Rui Wang
- Information Department of Medical Security Center, The General Hospital of Western Theater Command of PLA, Chengdu, China
| | - Ruijie Liu
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Tingting Wang
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Jianyou Shi
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Department of Pharmacy, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yonghe Hu
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China.,Department of Pharmacy, The General Hospital of Western Theater Command of PLA, Chengdu, China
| | - Jun Hou
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China.,Department of Pharmacy, The General Hospital of Western Theater Command of PLA, Chengdu, China
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26
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The Emerging Functions of Circular RNAs in Bladder Cancer. Cancers (Basel) 2021; 13:cancers13184618. [PMID: 34572845 PMCID: PMC8464819 DOI: 10.3390/cancers13184618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary The role of circular RNAs has made breakthroughs in understanding the mechanisms of tumor development. Bladder cancer has an increasing incidence, high recurrence rate, high metastatic potential, poor prognosis, and susceptibility to chemotherapy resistance. Thus, it is essential to identify molecules related to the tumorigenesis of bladder cancer. In this review, we summarize current knowledge about the expression of circular RNAs in bladder cancer and their implications in vesical carcinogenesis. We further discuss the limitations of existing studies and provide an outlook for future studies in the hopes of better revealing the association between circular RNAs and bladder cancer. Abstract Bladder cancer (BC) is among the top ten most common cancer types worldwide and is a serious threat to human health. Circular RNAs (circRNAs) are a new class of non-coding RNAs generated by covalently closed loops through back-splicing. As an emerging research hotspot, circRNAs have attracted considerable attention due to their high conservation, stability, abundance, and specificity of tissue development. Accumulating evidence has revealed different form of circRNAs are closely related to the malignant phenotype, prognosis and chemotherapy resistance of BC, suggesting that different circRNAs may be promising biomarkers and have therapeutic significance in BC. The intention of this review is to summarize the mechanisms of circRNA-mediated BC progression and their diagnostic and prognostic value as biomarkers, as well as to further explore their roles in chemotherapy resistance.
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27
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Cross-fostering alleviates depression-like behavior mediated by EAAT2 and SNARE complex in prenatal stress offspring rat. Pharmacol Biochem Behav 2021; 210:173269. [PMID: 34487773 DOI: 10.1016/j.pbb.2021.173269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/20/2022]
Abstract
Previous studies have shown that prenatal stress (PS) can potentially contribute to depression-like behavior in offspring and that this effect may be moderated by cross-fostering. However, the underlying mechanism of this effect remains to be determined. This study aimed to determine the effect of cross-fostering on the expression of EAAT2 and the SNARE complex in the hippocampus and the prefrontal cortex of PS offspring rats and to demonstrate functional effects on depression-like behavior. The impacts of cross-fostering were functionally assessed using the sucrose preference test (SPT), the forced swimming test (FST) and the elevated plus maze (EPM). Quantitative real-time PCR was used to determine changes in the expression of EAAT2 and SNAREs mRNA in the hippocampus and the prefrontal cortex of offspring rats. PS offspring rats showed significantly decreased sucrose preference and prolonged immobility time, while cross-fostering effectively increased sucrose preference and shorten the time of immobility. The expression of EAAT2 mRNA in PS offspring rats was markedly reduced, whilst the core mRNA expression of the SNARE complex increased. Our results provide strong evidence demonstrating that cross-fostering can alleviate depression-like behavior and regulate the abnormal expression levels of EAAT2 mRNA and SNARE complex in the hippocampus and the prefrontal cortex of PS offspring rats. Our findings contribute to further understanding of the pathogenesis of PS-induced depression and may help to inform the future development of novel treatment approaches.
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28
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Hu C, Liu X, Zeng Y, Liu J, Wu F. DNA methyltransferase inhibitors combination therapy for the treatment of solid tumor: mechanism and clinical application. Clin Epigenetics 2021; 13:166. [PMID: 34452630 PMCID: PMC8394595 DOI: 10.1186/s13148-021-01154-x] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
DNA methylation, an epigenetic modification, regulates gene transcription and maintains genome stability. DNA methyltransferase (DNMT) inhibitors can activate silenced genes at low doses and cause cytotoxicity at high doses. The ability of DNMT inhibitors to reverse epimutations is the basis of their use in novel strategies for cancer therapy. In this review, we examined the literature on DNA methyltransferase inhibitors. We summarized the mechanisms underlying combination therapy using DNMT inhibitors and clinical trials based on combining hypomethylation agents with other chemotherapeutic drugs. We also discussed the efficacy of such compounds as antitumor agents, the need to optimize treatment schedules and the regimens for maximal biologic effectiveness. Notably, the combination of DNMT inhibitors and chemotherapy and/or immune checkpoint inhibitors may provide helpful insights into the development of efficient therapeutic approaches.
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Affiliation(s)
- Chunhong Hu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Hunan Cancer Mega-Data Intelligent Application and Engineering Research Centre, Changsha, 410011, Hunan, China
| | - Xiaohan Liu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Yue Zeng
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Junqi Liu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Fang Wu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Hunan Key Laboratory of Early Diagnosis and Precision Therapy in Lung Cancer, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Hunan Cancer Mega-Data Intelligent Application and Engineering Research Centre, Changsha, 410011, Hunan, China.
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29
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Carbajo-García MC, Corachán A, Segura-Benitez M, Monleón J, Escrig J, Faus A, Pellicer A, Cervelló I, Ferrero H. 5-aza-2'-deoxycitidine inhibits cell proliferation, extracellular matrix formation and Wnt/β-catenin pathway in human uterine leiomyomas. Reprod Biol Endocrinol 2021; 19:106. [PMID: 34233687 PMCID: PMC8265104 DOI: 10.1186/s12958-021-00790-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/18/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Uterine leiomyoma is a benign tumor with unclear pathogenesis and inaccurate treatment. This tumor exhibits altered DNA methylation related to disease progression. DNMT inhibitors as 5-aza-2'-deoxycytidine (5-aza-CdR), have been suggested to treat tumors in which DNA methylation is altered. We aimed to evaluate whether DNA methylation reversion with 5-aza-CdR reduces cell proliferation and extracellular matrix (ECM) formation in uterine leiomyoma cells to provide a potential treatment option. METHODS Prospective study using uterine leiomyoma and adjacent myometrium tissues and human uterine leiomyoma primary (HULP) cells (n = 16). In tissues, gene expression was analyzed by qRT-PCR and DNMT activity by ELISA. Effects of 5-aza-CdR treatment on HULP cells were assessed by CellTiter, western blot, and qRT-PCR. RESULTS DNMT1 gene expression was higher in uterine leiomyoma vs myometrium. Similarly, DNMT activity was greater in uterine leiomyoma and HULP cells (6.5 vs 3.8 OD/h/mg; 211.3 vs 63.7 OD/h/mg, respectively). After 5-aza-CdR treatment on HULP cells, cell viability was reduced, significantly so at 10 μM (85.3%). Treatment with 10 μM 5-aza-CdR on HULP cells significantly decreased expression of proliferation marker PCNA (FC = 0.695) and of ECM proteins (COLLAGEN I FC = 0.654; PAI-1, FC = 0.654; FIBRONECTIN FC = 0.733). 5-aza-CdR treatment also decreased expression of Wnt/β-catenin pathway final targets, including WISP1 protein expression (10 μM, FC = 0.699), c-MYC gene expression (2 μM, FC = 0.745 and 10 μM, FC = 0.728), and MMP7 gene expression (5 μM, FC = 0.520 and 10 μM, FC = 0.577). CONCLUSIONS 5-aza-CdR treatment inhibits cell proliferation, ECM formation, and Wnt/β-catenin signaling pathway targets in HULP cells, suggesting that DNA methylation inhibition is a viable therapeutic target in uterine leiomyoma.
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Affiliation(s)
- María Cristina Carbajo-García
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Universidad de Valencia, Valencia, Spain
| | - Ana Corachán
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Universidad de Valencia, Valencia, Spain
| | - Marina Segura-Benitez
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Universidad de Valencia, Valencia, Spain
| | - Javier Monleón
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Julia Escrig
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Amparo Faus
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
| | - Antonio Pellicer
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
- IVIRMA Rome, Rome, Italy
| | - Irene Cervelló
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain
| | - Hortensia Ferrero
- Fundación IVI, Instituto de Investigación Sanitaria La Fe, Avenida Fernando Abril Martorell 106, Torre A, Planta 1ª, 46026, Valencia, Spain.
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CBX7 suppresses urinary bladder cancer progression via modulating AKR1B10-ERK signaling. Cell Death Dis 2021; 12:537. [PMID: 34035231 PMCID: PMC8149849 DOI: 10.1038/s41419-021-03819-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 01/10/2023]
Abstract
The chromobox (CBX) proteins mediate epigenetic gene silencing and have been implicated in the cancer development. By analyzing eight CBX family members in TCGA dataset, we found that chromobox 7 (CBX7) was the most strikingly downregulated CBX family member in urinary bladder cancer (UBC), as compared to normal tissues. Though dysregulation of CBX7 has been reported in multiple cancers, its specific role and clinical relevance in UBC remain unclear. Herein, we found that frequent downregulation of CBX7 in UBC specimens, which was due to its promoter hypermethylation, was correlated with poor prognosis. The ectopic expression of CBX7 suppressed UBC cell proliferation, migration, invasion, and cancer stemness, whereas CBX7 depletion promoted cancer cell aggressiveness. Importantly, CBX7 overexpression in UBC cells inhibited tumorigenicity, whereas CBX7 depletion promoted the tumor development, indicating its tumor-suppressive role in UBC. Using RNA-seq and chromosome immunoprecipitation (ChIP) assays, we identified aldo-keto reductase family 1 member 10 (AKR1B10) as a novel downstream target of CBX7, which was negatively modulated by CBX7 in a PRC1-dependent manner and involved in stimulating ERK signaling. Consistently, AKR1B10 overexpression induced cancer cell aggressiveness, whereas suppression of AKR1B10 by siRNA or its small molecular inhibitor, oleanolic acid, reversed the CBX7 deficiency-induced cellular effects. AKR1B10 overexpression was negatively associated with CBX7 downregulation and predicted poor clinical outcomes in UBC patients. Taken together, our results indicate that CBX7 functions as a tumor suppressor to downregulate AKR1B10 and further inactivates ERK signaling. This CBX7/AKR1B10/ERK signaling axis may provide a new therapeutic strategy against UBC.
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31
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Lodewijk I, Nunes SP, Henrique R, Jerónimo C, Dueñas M, Paramio JM. Tackling tumor microenvironment through epigenetic tools to improve cancer immunotherapy. Clin Epigenetics 2021; 13:63. [PMID: 33761971 PMCID: PMC7992805 DOI: 10.1186/s13148-021-01046-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/01/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Epigenetic alterations are known contributors to cancer development and aggressiveness. Additional to alterations in cancer cells, aberrant epigenetic marks are present in cells of the tumor microenvironment, including lymphocytes and tumor-associated macrophages, which are often overlooked but known to be a contributing factor to a favorable environment for tumor growth. Therefore, the main aim of this review is to give an overview of the epigenetic alterations affecting immune cells in the tumor microenvironment to provoke an immunosuppressive function and contribute to cancer development. Moreover, immunotherapy is briefly discussed in the context of epigenetics, describing both its combination with epigenetic drugs and the need for epigenetic biomarkers to predict response to immune checkpoint blockage. MAIN BODY Combining both topics, epigenetic machinery plays a central role in generating an immunosuppressive environment for cancer growth, which creates a barrier for immunotherapy to be successful. Furthermore, epigenetic-directed compounds may not only affect cancer cells but also immune cells in the tumor microenvironment, which could be beneficial for the clinical response to immunotherapy. CONCLUSION Thus, modulating epigenetics in combination with immunotherapy might be a promising therapeutic option to improve the success of this therapy. Further studies are necessary to (1) understand in depth the impact of the epigenetic machinery in the tumor microenvironment; (2) how the epigenetic machinery can be modulated according to tumor type to increase response to immunotherapy and (3) find reliable biomarkers for a better selection of patients eligible to immunotherapy.
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Affiliation(s)
- Iris Lodewijk
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales Y Tecnológicas (CIEMAT), 28040 Madrid, Spain
- Biomedical Research Institute I+12, University Hospital “12 de Octubre”, 28041 Madrid, Spain
| | - Sandra P. Nunes
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales Y Tecnológicas (CIEMAT), 28040 Madrid, Spain
- Biomedical Research Institute I+12, University Hospital “12 de Octubre”, 28041 Madrid, Spain
- Cancer Biology and Epigenetics Group – Research Center, Portuguese Oncology Institute of Porto (CI-IPOP), 4200-072 Porto, Portugal
| | - Rui Henrique
- Cancer Biology and Epigenetics Group – Research Center, Portuguese Oncology Institute of Porto (CI-IPOP), 4200-072 Porto, Portugal
- Department of Pathology, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar – University of Porto (ICBAS-UP), 4050-313 Porto, Portugal
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group – Research Center, Portuguese Oncology Institute of Porto (CI-IPOP), 4200-072 Porto, Portugal
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar – University of Porto (ICBAS-UP), 4050-313 Porto, Portugal
| | - Marta Dueñas
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales Y Tecnológicas (CIEMAT), 28040 Madrid, Spain
- Biomedical Research Institute I+12, University Hospital “12 de Octubre”, 28041 Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), 28029 Madrid, Spain
| | - Jesús M. Paramio
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales Y Tecnológicas (CIEMAT), 28040 Madrid, Spain
- Biomedical Research Institute I+12, University Hospital “12 de Octubre”, 28041 Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), 28029 Madrid, Spain
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Jakobsen MK, Traynor S, Stæhr M, Duijf PG, Nielsen AY, Terp MG, Pedersen CB, Guldberg P, Ditzel HJ, Gjerstorff MF. The Cancer/Testis Antigen Gene VCX2 Is Rarely Expressed in Malignancies but Can Be Epigenetically Activated Using DNA Methyltransferase and Histone Deacetylase Inhibitors. Front Oncol 2021; 10:584024. [PMID: 33634013 PMCID: PMC7900521 DOI: 10.3389/fonc.2020.584024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/14/2020] [Indexed: 01/25/2023] Open
Abstract
Identification of novel tumor-specific targets is important for the future development of immunotherapeutic strategies using genetically engineered T cells or vaccines. In this study, we characterized the expression of VCX2, a member of the VCX/Y cancer/testis antigen family, in a large panel of normal tissues and tumors from multiple cancer types using immunohistochemical staining and RNA expression data. In normal tissues, VCX2 was detected in the germ cells of the testis at all stages of maturation but not in any somatic tissues. Among malignancies, VCX2 was only found in tumors of a small subset of melanoma patients and thus rarely expressed compared to other cancer/testis antigens such as GAGE and MAGE-A. The expression of VCX2 correlated with that of other VCX/Y genes. Importantly, we found that expression of VCX2 was inversely correlated with promoter methylation and could be activated by treatment with a DNA methyltransferase inhibitor in multiple breast cancer and melanoma cell lines and a breast cancer patient-derived xenograft. The effect could be further potentiated by combining the DNA methyltransferase inhibitor with a histone deacetylase inhibitor. Our results show that the expression of VCX2 can be epigenetically induced in cancer cells and therefore could be an attractive target for immunotherapy of cancer.
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Affiliation(s)
- Mie K Jakobsen
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Sofie Traynor
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Mette Stæhr
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Pascal G Duijf
- Institute of Health and Biomedical Innovation, Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD, Australia.,University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Aaraby Y Nielsen
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Mikkel G Terp
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Christina B Pedersen
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Per Guldberg
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark.,Molecular Diagnostics Group, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Henrik J Ditzel
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark.,Department of Oncology, Odense University Hospital, Odense, Denmark.,Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
| | - Morten F Gjerstorff
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark.,Department of Oncology, Odense University Hospital, Odense, Denmark.,Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
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Novel Approaches to Epigenetic Therapies: From Drug Combinations to Epigenetic Editing. Genes (Basel) 2021; 12:genes12020208. [PMID: 33572577 PMCID: PMC7911730 DOI: 10.3390/genes12020208] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/24/2021] [Accepted: 01/28/2021] [Indexed: 12/11/2022] Open
Abstract
Cancer development involves both genetic and epigenetic alterations. Aberrant epigenetic modifications are reversible, allowing excellent opportunities for therapeutic intervention. Nowadays, several epigenetic drugs are used worldwide to treat, e.g., myelodysplastic syndromes and leukemias. However, overcoming resistance and widening the therapeutic profiles are the most important challenges faced by traditional epigenetic drugs. Recently, novel approaches to epigenetic therapies have been proposed. Next-generation epigenetic drugs, with longer half-life and better bioavailability, are being developed and tested. Since epigenetic phenomena are interdependent, treatment modalities include co-administration of two different epigenetic drugs. In order to sensitize cancer cells to chemotherapy, epigenetic drugs are administered prior to chemotherapy, or both epigenetic drug and chemotherapy are used together to achieve synergistic effects and maximize treatment efficacy. The combinations of epigenetic drug with immunotherapy are being tested, because they have proved to enhance antitumor immune responses. The next approach involves targeting the metabolic causes of epigenetic changes, i.e., enzymes which, when mutated, produce oncometabolites. Finally, epigenome editing makes it possible to modify individual chromatin marks at a defined region with unprecedented specificity and efficiency. This review summarizes the above attempts in fulfilling the promise of epigenetic drugs in the effective cancer treatment.
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Hernández-Lemus E, Martínez-García M. Pathway-Based Drug-Repurposing Schemes in Cancer: The Role of Translational Bioinformatics. Front Oncol 2021; 10:605680. [PMID: 33520715 PMCID: PMC7841291 DOI: 10.3389/fonc.2020.605680] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 11/24/2020] [Indexed: 12/11/2022] Open
Abstract
Cancer is a set of complex pathologies that has been recognized as a major public health problem worldwide for decades. A myriad of therapeutic strategies is indeed available. However, the wide variability in tumor physiology, response to therapy, added to multi-drug resistance poses enormous challenges in clinical oncology. The last years have witnessed a fast-paced development of novel experimental and translational approaches to therapeutics, that supplemented with computational and theoretical advances are opening promising avenues to cope with cancer defiances. At the core of these advances, there is a strong conceptual shift from gene-centric emphasis on driver mutations in specific oncogenes and tumor suppressors-let us call that the silver bullet approach to cancer therapeutics-to a systemic, semi-mechanistic approach based on pathway perturbations and global molecular and physiological regulatory patterns-we will call this the shrapnel approach. The silver bullet approach is still the best one to follow when clonal mutations in driver genes are present in the patient, and when there are targeted therapies to tackle those. Unfortunately, due to the heterogeneous nature of tumors this is not the common case. The wide molecular variability in the mutational level often is reduced to a much smaller set of pathway-based dysfunctions as evidenced by the well-known hallmarks of cancer. In such cases "shrapnel gunshots" may become more effective than "silver bullets". Here, we will briefly present both approaches and will abound on the discussion on the state of the art of pathway-based therapeutic designs from a translational bioinformatics and computational oncology perspective. Further development of these approaches depends on building collaborative, multidisciplinary teams to resort to the expertise of clinical oncologists, oncological surgeons, and molecular oncologists, but also of cancer cell biologists and pharmacologists, as well as bioinformaticians, computational biologists and data scientists. These teams will be capable of engaging on a cycle of analyzing high-throughput experiments, mining databases, researching on clinical data, validating the findings, and improving clinical outcomes for the benefits of the oncological patients.
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Affiliation(s)
- Enrique Hernández-Lemus
- Computational Genomics Division, National Institute of Genomic Medicine, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Mireya Martínez-García
- Sociomedical Research Unit, National Institute of Cardiology “Ignacio Chávez”, Mexico City, Mexico
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